org.springframework.expression.spel.support
Class ReflectiveConstructorResolver

java.lang.Object
  org.springframework.expression.spel.support.ReflectiveConstructorResolver

All Implemented Interfaces:

ConstructorResolver

public class ReflectiveConstructorResolver
extends Object
implements ConstructorResolver

A constructor resolver that uses reflection to locate the constructor that should be invoked

Since:

3.0

Author:

Andy Clement, Juergen Hoeller

Constructor Summary

ReflectiveConstructorResolver()

Method Summary

ConstructorExecutor

resolve(EvaluationContext context, String typename, List<TypeDescriptor> argumentTypes) Locate a constructor on the type.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ReflectiveConstructorResolver

public ReflectiveConstructorResolver()

Method Detail

resolve

public ConstructorExecutor resolve(EvaluationContext context,
                                   String typename,
                                   List<TypeDescriptor> argumentTypes)
                            throws AccessException

Locate a constructor on the type. There are three kinds of match that might occur:

1. An exact match where the types of the arguments match the types of the constructor
2. An in-exact match where the types we are looking for are subtypes of those defined on the constructor
3. A match where we are able to convert the arguments into those expected by the constructor, according to the registered type converter.

Specified by:

resolve in interface ConstructorResolver

Parameters:

context - the current evaluation context

typename - the type upon which to look for the constructor

argumentTypes - the arguments that the constructor must be able to handle

Returns:

a ConstructorExecutor that can invoke the constructor, or null if non found

Throws:

AccessException